Badiatob



metal or other eiserne refr RADIA'IC OR.

Specification of Letters Patent.

Patented Auge 32.2., iit).

` Application ed Apri120, M16. Serial No. 92,407.

To all whom t may concern.'

Be it known that we, Komma* Eintra- MAN and iViLLiau N.i'11i.\.\'sf citizens of the United States, and residents of the city of Chicago, county ot' Cook. and State of Illinois, have jointly invented certain new and useful improvements in Radiators. of which the followiim` is a specification.

Our invention relates to improvements in radiators designed for use especially in connection with automobiles for coolingir the Water which is circulated through the cooling jackets ofthe cylinders 'of the automobile engine. l

The object of our inventionis the production of a radiator of the character mentioned Which will be of durable and economical construction and which will be capable of efficient service in the cooling of water passed therethrough.

Other objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and clairnec. f

The invention will be best understood by reference to the accompanying drawing forming a part of this specifica-tion, and in which,

Figure l is a front elevation of an automobile radiator enibodying the invention,

Fig. 2 is a front elevation of a fragment of the radiator, enlarged, j

Fig. 3 is an enlarged' vertical transverse section of a fragment ot the radiator, and

Figs. 4 and 5 are sections taken on lines mand y-y respectively of Fig. 3.

The preferred form of construction, as illustrated in the rawing, comprises a radiatorframe l Whichis of conventional construction, being provided in its --upper end,

with the usual receiving chamber and at its lower end with the usual dispensing,r chamber.

Mounted in the central opening in frame 1 is the radiator body 2 which establishes communication between the receivingl and dispensing chambers of the radiator frame as is generally understood. Said radiator body is formed of a series of verticallyv extending units arranged side by side, each of said units consisting of two strips 3 of sheet heat conducting material. Each of the strips 3 is formed With alternating transversely extending straight flat portions l and inwardly offset portions ".llach of the portions 5 is formed centrally with an outwardly depressed portion (i. The portions l of one strip register with the portions 5 of the other, thc longitudinal edges of said strips interlocking with and snugly fittingcach other, as clearly shown in Fig. 2. said edges being' sealed together by dippingr the same in solder. as the usual practice. "With this arrangement, it will be seen, that a. tortuous passage 7 will be formed between the strips I in each unit which serves. in the operation ot' the radiator, to somewhat retard thc fiow of the water therethrough in order to effec-t thorough coolin; r oi' the same by the time the Water has passed completely through the radiator. Also, the peculiar formation of the strips 3 and particularly the p' provision of a depression or concavity inv cach of the inwardly offset portions '5, serves to lend strength and rigidity to the device. and therefore. to adapt the same to stand up underthe rough treatment to which the same is subjected when in use.

Certain of the straight iiat portions 4 of the strips 3 of each unit are formed with formed blind passages which conmiunicate with the vcorresponding passage 7. The plaits 8 of one unit engage with the straight lat portions l of the adjacent unit, and thus serve as a means of spacing the units apart so as to form transversely extending air passages S) between thesame. @the central portions of the bights of said plaits are depressed or offset inwardly as at S so that said plaits engage with the portions 4 only 'at the ends of said plaits as cl airly shown in Fig. al.. This results in spaces bein formed between the central portions of the ights of said plaits and the adjacentflat portions 4 which results in they production of a maximum of heat radiating surface which, of ourse, is of prime importance in a These spaces which are formed at the nights of plaits S also result in the formation of vertical air passages which intersect the horizontal passages for the air, such as are constituted by the openings 9. vThe units are all connected together to form one solid body in the dipping of the longitudinal edges thereof in solder, as above described.

All of the strips are of identical form, ,being pressed or stamped from the same die,

extending plaits 8 in 'which are radiator..

the radiatorv being built or assembled by matching the strips together in the manner above set forth. l

lVhile We have illustrated and described the preferred forni ot' construction for carrying our invention into eti'ect, this is capable of variation and modification without departing from the spirit of the invention. lVe, therefore, do not wish to be limited to the precise details of construction set forth, but desire to avail onrselves of such variations and modifications as come Within the scope of the appended claims.

Having described our invention what We claim as new and desire t0 secure by Letters Patent is:

1. A radiator comprising a series 0f vertically disposed units each consisting of a pair of strips of heat conducting material arranged yside by side, each of said strips having alternating transversely extending straight'flat portions and inwardlyoffset portions, the central portion of ea'ch of said offset portions being pressed outwardly, the straight fiat portions of one strip registering with the offset portions of the other, and

the'longitudinal edges of said strips interlocking with and snngl fitting each other forming a tortuous vertlcally extending Water passage between said strips; and outwardly extending plaits on said strips at certain of the straight flat portions thereof having blind passages formed therein -coinmunicating with the eorrespondin vertical passage, the bights of the plaits o one unit Leren?? engaging against the unplaited straight dat portions ot' adjoining strips to space a. cent units apart, substantially as described, ,2. A .radiator comprising .a series of ver? tically disposed units each consisting oi pair of strips ot heat conducting mate-,ri arranged side by side, each of said st;L having alternate straight flat portions inwardly offset concave portions, t straight fiat portions of one strip regierte ing with the os-et port' ns of the other-and the longitudina e J et* said stri a inter'- locking with and agir {itting on l other forming a tortuoas vm'tieally extending ws ter passage between said strips; id out wardly extending plaits on said strips llaving blind passages formed therein communicating with the corresponding vertical passage, the nights of the plaits of esel: unit engaging against the straight fiitigortions of adjacent units to space the sen'ieapart, the central ortions of the vloiglits"nt said plaits being'mwardly olfset to afford spaces between saidcentral portions of the 4tightsv of said plaits and the adjacent surfaces of adjacent units, substantially as described.

ln testimony whereof We have signed our names to this specification in the presence of two subscribingwitnesses.

KLMAN EMMERMAN'. WXLLIAM NATHANSON. 

